Postfix - PHP view need help to view the Subject of Queued Emails

Hi, we have a CentOS server with Postfix Mail Server as a relay host. We have created a web based interface (php - bootstarp) where a user will check and control all queued messages from postfix. The web based interface show the queued email messages.

The server located on a local network so we can provide you access.

Need someone experienced in Linux Admin CentOS Postfix PHP to bring the SUBJECT of queued messages.

Deadline: 1day max